| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * Copyright (c) 2017 Cyril Hrubis <chrubis@suse.cz> |
| */ |
| |
| #include <stdio.h> |
| #include <errno.h> |
| #include <stdlib.h> |
| #include <sys/mount.h> |
| #include <sys/wait.h> |
| |
| #define TST_NO_DEFAULT_MAIN |
| #include "tst_test.h" |
| #include "tst_fs.h" |
| |
| static const char *const fs_type_whitelist[] = { |
| "ext2", |
| "ext3", |
| "ext4", |
| "xfs", |
| "btrfs", |
| "vfat", |
| "exfat", |
| "ntfs", |
| NULL |
| }; |
| |
| static const char *fs_types[ARRAY_SIZE(fs_type_whitelist)]; |
| |
| static int has_mkfs(const char *fs_type) |
| { |
| char buf[128]; |
| int ret; |
| |
| sprintf(buf, "mkfs.%s >/dev/null 2>&1", fs_type); |
| |
| ret = tst_system(buf); |
| |
| if (WEXITSTATUS(ret) == 127) { |
| tst_res(TINFO, "mkfs.%s does not exist", fs_type); |
| return 0; |
| } |
| |
| tst_res(TINFO, "mkfs.%s does exist", fs_type); |
| return 1; |
| } |
| |
| static int has_kernel_support(const char *fs_type, int flags) |
| { |
| static int fuse_supported = -1; |
| const char *tmpdir = getenv("TMPDIR"); |
| char buf[128]; |
| int ret; |
| |
| if (!tmpdir) |
| tmpdir = "/tmp"; |
| |
| mount("/dev/zero", tmpdir, fs_type, 0, NULL); |
| if (errno != ENODEV) { |
| tst_res(TINFO, "Kernel supports %s", fs_type); |
| return 1; |
| } |
| |
| /* Is FUSE supported by kernel? */ |
| if (fuse_supported == -1) { |
| ret = open("/dev/fuse", O_RDWR); |
| if (ret < 0) { |
| fuse_supported = 0; |
| } else { |
| fuse_supported = 1; |
| SAFE_CLOSE(ret); |
| } |
| } |
| |
| if (!fuse_supported) |
| return 0; |
| |
| /* Is FUSE implementation installed? */ |
| sprintf(buf, "mount.%s >/dev/null 2>&1", fs_type); |
| |
| ret = tst_system(buf); |
| if (WEXITSTATUS(ret) == 127) { |
| tst_res(TINFO, "Filesystem %s is not supported", fs_type); |
| return 0; |
| } |
| |
| if (flags & TST_FS_SKIP_FUSE) { |
| tst_res(TINFO, "Skipping FUSE as requested by the test"); |
| return 0; |
| } |
| |
| tst_res(TINFO, "FUSE does support %s", fs_type); |
| return 1; |
| } |
| |
| int tst_fs_is_supported(const char *fs_type, int flags) |
| { |
| return has_kernel_support(fs_type, flags) && has_mkfs(fs_type); |
| } |
| |
| const char **tst_get_supported_fs_types(int flags) |
| { |
| unsigned int i, j = 0; |
| |
| for (i = 0; fs_type_whitelist[i]; i++) { |
| if (tst_fs_is_supported(fs_type_whitelist[i], flags)) |
| fs_types[j++] = fs_type_whitelist[i]; |
| } |
| |
| return fs_types; |
| } |